"alignment tools" refer to tools or methods used to make things fit or work together correctly. These tools help ensure that different parts or elements are properly aligned or coordinated to achieve a desired outcome. Full definition
At this point, I started looking into DIY alignment tools and methods and found these. (amazon.com)
You will gain a profound understanding of the foundational asanas as alignment tools for safe physical practice, and for yoking the mind to this moment. (anniecarpenter.com)
Also, the 1000 Genomes Project DCC will be performing its own evaluation of alignment tools and sequence analysis using the same data, so we can compare notes. (massgenomics.org)